A bomb threat that cleared Facebook's buildings of employees on Tuesday night turned out to be "a big nothing," according to Menlo Park police.
Someone slipped a note under another person's office door that said a bomb would go off at Facebook headquarters, according to San Francisco Police Sgt. Danielle Newman. The recipient called SFPD, who in turn notified Menlo Park police.
Menlo Park Police Cmdr. Dave Bertini said officers followed standard procedure and cleared the buildings, located at 1 Hacker Way, until determining that the campus was safe.
Meanwhile, Facebook's employees huddled in the central courtyard until about 8:30 p.m., when shuttle buses were cleared to take everyone home, sources said.
According to Cmdr. Bertini, the San Francisco police department passed along a report of a possible threat around 7:10 p.m. on Tuesday (March 11).
"I'm not even sure it was directed against Menlo Park Facebook," he said.
Sgt. Newman said the investigation into the threat remains "open and active."
Bay City News contributed to this report.